icuSources/test/perf/howExpensiveIs/sieve.h

   1 /*
   2  **********************************************************************
   3  * Copyright (c) 2011,International Business Machines
   4  * Corporation and others.  All Rights Reserved.
   5  **********************************************************************
   6  */
   7
   8 #ifndef SIEVE_H
   9 #define SIEVE_H
  10
  11 #define U_LOTS_OF_TIMES 1000000
  12
  13 #include "unicode/utypes.h"
  14 /**
  15  * Calculate the standardized sieve time (1 run)
  16  */
  17 U_INTERNAL double uprv_calcSieveTime(void);
  18
  19 /**
  20  * Calculate the mean time, with margin of error
  21  * @param times array of times (modified/sorted)
  22  * @param timeCount length of array
  23  * @param marginOfError out parameter: gives +/- margin of err at 95% confidence
  24  * @return the mean time, or negative if error/imprecision.
  25  */
  26 U_INTERNAL double uprv_getMeanTime(double *times, uint32_t timeCount, double *marginOfError);
  27
  28 /**
  29  * Get the standardized sieve time. (Doesn't recalculate if already computed.
  30  * @param marginOfError out parameter: gives +/- margin of error at 95% confidence.
  31  * @return the mean time, or negative if error/imprecision.
  32  */
  33 U_INTERNAL double uprv_getSieveTime(double *marginOfError);
  34
  35 #endif